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2. Grating - Wikipedia

   en.wikipedia.org/wiki/Grating

   The grating profile is the function of the reflectance or transmittance perpendicular to the lines. This function is generally a square wave, in that every transition between lines is abrupt. A grating can be defined by six parameters: Spatial frequency is the number of cycles occupying a particular distance (e.g. 10 line pairs per millimeter ...

3. Anti-slip grating - Wikipedia

   en.wikipedia.org/wiki/Anti-slip_grating

   Anti-slip steel grating is a type of bar grating. Steel bar grating is manufactured in a variety of methods. Welded bar grating consists of load bars electrically fuse welded to cross bars. Pressure-locked bar grating, or swaged grating, is where steel rods are forced through and locked in load bars. Riveted bar grating is where the load bars ...

4. Marston Mat - Wikipedia

   en.wikipedia.org/wiki/Marston_mat

   RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

5. Morrison Bridge - Wikipedia

   en.wikipedia.org/wiki/Morrison_Bridge

   Previously, there were only narrow sidewalks. In 2011–12, the steel grating on the bascule deck was replaced with fiber-reinforced polymer panels to provide better traction for vehicles. The work was completed in March 2012, [3] but problems with the new deck panels began to be reported in fall 2013. [14]

6. Bridgeport Bridge (Ohio River) - Wikipedia

   en.wikipedia.org/wiki/Bridgeport_Bridge_(Ohio_River)

   Except for the replacement of the partially wooden roadway surface with steel grating in 1950, the bridge remained basically unchanged. Because the floor beams had become structurally unsound, a new, self-supporting, load-bearing deck structure was installed inside the trusses of the Bridgeport Bridge in 1987.

7. Expanded metal - Wikipedia

   en.wikipedia.org/wiki/Expanded_metal

   Expanded metal lath used to support stucco (1919) Facade made from expanded metal. Expanded metal is frequently used to make fences, walkways, and grates, as the material is very durable and strong, unlike lighter and less expensive [dubious – discuss] wire mesh. The many small openings in the material allow flow through of air, water, and ...